Addressed reviewer's comments, several small changes for clarity

cta-observatory · Nov 24, 2023 · 9484b0f · 9484b0f
1 parent 9018718
commit 9484b0f
Showing 1 changed file with 17 additions and 27 deletions.
diff --git a/notebooks/calculate_sensitivity_from_Crab.ipynb b/notebooks/calculate_sensitivity_from_Crab.ipynb
@@ -32,9 +32,7 @@
     "from ctapipe_io_lst import LSTEventSource\n",
     "from ctapipe.io import read_table\n",
     "\n",
-    "%matplotlib inline\n",
-    "\n",
-    "#%load_ext filprofiler"
+    "%matplotlib inline"
    ]
   },
   {
@@ -99,8 +97,8 @@
     "# Assumed (effective) observation time for the calculation (note: it has nothing to do with \n",
     "# the actual observation time of the sample used for the calculation!):\n",
     "obs_time = 50 * u.h \n",
-    "# obs_time = 1/60. * u.h # 1 minute\n",
-    "# obs_time = 0.083333333 * u.h  # 5 minutes\n",
+    "# obs_time = 1 * u.min\n",
+    "# obs_time = 5 * u.min\n",
     "# obs_time = 0.5 * u.h\n",
     "# obs_time = 0.7 * u.h\n",
     "# obs_time = 5 * u.h\n",
@@ -133,9 +131,16 @@
     "# We separate them so that we can optimize the cuts in one and apply them to \n",
     "# the other (and vice versa)\n",
     "\n",
-    "# For source-independent analysis we will use one off region up to 250 GeV. \n",
+    "# Background estimation:\n",
+    "# For source-independent analysis, we will use one off region up to 250 GeV. \n",
     "# Three off regions for higher energies:\n",
     "first_ebin_with_3offs = 7 # i.e. from ~250 GeV onwards\n",
+    "# NOTE!  This is just what is used to *estimate* the average background in the on-region. \n",
+    "# For the actual computation of sensitivity, in order to follow the standard definition, \n",
+    "# we use (Li & Ma's) alpha = 0.2  (define in the cell above), i.e. we assume we can compute \n",
+    "# the background in a region 5 times larger than the on-region. In practice it is somehow \n",
+    "# optimistic for a standalone telescope like LST-1, with its limited angular resolution.\n",
+    "#\n",
     "\n",
     "# Intensity cuts:\n",
     "min_intensity = 50\n",
@@ -182,24 +187,16 @@
     "norm_range = np.array([[0.1, 0.16], [20., 59.8]]) # deg2 for theta2,  deg for Alpha"
    ]
   },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "id": "9574f30b",
-   "metadata": {},
-   "outputs": [],
-   "source": [
-    "sa = LSTEventSource.create_subarray(tel_id=1)\n",
-    "focal = sa.tel[1].optics.effective_focal_length"
-   ]
-  },
   {
    "cell_type": "code",
    "execution_count": null,
    "id": "54cf3f44",
    "metadata": {},
    "outputs": [],
    "source": [
+    "sa = LSTEventSource.create_subarray(tel_id=1)\n",
+    "focal = sa.tel[1].optics.effective_focal_length\n",
+    "\n",
     "# The source position src_x, src_y (in m), stored in \"source_position\", is calculated by \n",
     "# lstchain_dl2_add_sourcepos.py using the effective focal length (29.30565 m), which means \n",
     "# that it is \"consistent\" with the reco values reco_src_x, reco_src_y (which are affected \n",
@@ -236,8 +233,6 @@
    },
    "outputs": [],
    "source": [
-    "#%%filprofile\n",
-    "\n",
     "tablename = \"/dl2/event/telescope/parameters/LST_LSTCam\"\n",
     "livetimes = []\n",
     "\n",
@@ -350,7 +345,6 @@
    },
    "outputs": [],
    "source": [
-    "#%%filprofile\n",
     "# Columns to be kept in the case of source-dependent analysis (again, so save memory):\n",
     "\n",
     "columns_srcdep = [\"('on', 'expected_src_x')\",\n",
@@ -502,8 +496,6 @@
    },
    "outputs": [],
    "source": [
-    "#%%filprofile\n",
-    "\n",
     "# Obtain the cumulative histograms: integrate in gammaness and in theta (or alpha).\n",
     "\n",
     "for evtid in range(cum_on_events[0].shape[0]):\n",
@@ -685,7 +677,7 @@
    "source": [
     "#################################################################################################\n",
     "#                                                                                               #\n",
-    "# SECOND PART OF THE NOTEBOOK!!! RUN FROM HERE OF YOU JUST WANT TO RE-RUN THE CUT OPTIMIZATION  #\n",
+    "# SECOND PART OF THE NOTEBOOK!!! RUN FROM HERE IF YOU JUST WANT TO RE-RUN THE CUT OPTIMIZATION  #\n",
     "# USING THE SAME DATA SAMPLES!                                                                  #\n",
     "#                                                                                               #\n",
     "##################################################################################################"
@@ -715,8 +707,8 @@
     "# Assumed (effective) observation time for the calculation (note: it has nothing to do with \n",
     "# the actual observation time of the sample used for the calculation!):\n",
     "# obs_time = 50 * u.h \n",
-    "# obs_time = 1/60. * u.h # 1 minute\n",
-    "# obs_time = 0.083333333 * u.h  # 5 minutes\n",
+    "# obs_time = 1 * u.min\n",
+    "# obs_time = 5 * u.min\n",
     "# obs_time = 0.5 * u.h\n",
     "# obs_time = 0.7 * u.h\n",
     "# obs_time = 5 * u.h\n",
@@ -849,8 +841,6 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "#%%filprofile\n",
-    "\n",
     "lima_signi = [[], []]\n",
     "flux_for_5_sigma = [[], []]\n",
     "\n",